Method of forming and reforming a plastic composite

Details Method of forming and reforming a plastic composite Method of forming and reforming a plastic composite

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/165 (2006.01) B29C 63/00 (2006.01) B29C 65/34 (2006.01)

Patent

CA 2095733

2095733 9306410 PCTABS00021 A lining (10) and method for in situ rehabilitation of a pipe is disclosed. The lining comprises a tubular shaped resin impregnated composite (20) having a conductive layer surrounding an inflatable bladder (30). The method comprises the steps of positioning the lining (10) within a pipe section, inflating the bladder (30) until the lining is in contiguous contact with the interior of the pipe and inducing an electric current through the conductive layer (24) to resistively heat the lining and cure the impregnated resin. A method of reforming a composite part, such as a pipe lining, is also enclosed. The reforming method comprises heating a composite having a thermosetting resin which has been allowed to cure sufficiently so that the resin goes into an elastic state. Pressure is then applied to reform at least a portion of the composite part while the resin is in the elastic state.

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